package com.mixmer.excelanalysis.properties;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;


/**
 * PropertiesUtil.java
 *
 * @author Guoxp
 * @desc properties 资源文件解析工具
 * @datatime Apr 7, 2013 3:58:45 PM
 */
public class PropertiesUtil {

    private Properties props;
    private URI uri;

    public PropertiesUtil(String fileName) {
        readProperties(fileName);
    }

    private void readProperties(String fileName) {
        try {
            props = new Properties();
//            InputStream fis = this.getClass().getResourceAsStream(fileName);
            InputStream fis = new FileInputStream(fileName);
            props.load(fis);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 获取某个属性
     */
    public String getProperty(String key) {
        return props.getProperty(key);
    }

    /**
     * 获取所有属性，返回一个map,不常用
     * 可以试试props.putAll(t)
     */
    public Map<String, String> getAllProperty() {
        Map<String, String> map = new HashMap<>();
        Enumeration<?> enu = props.propertyNames();
        while (enu.hasMoreElements()) {
            String key = (String) enu.nextElement();
            String value = props.getProperty(key);
            map.put(key, value);
        }
        return map;
    }

    /**
     * 获取所有属性，返回一个map,不常用
     * 可以试试props.putAll(t)
     */
    public void clearAllProperty() {
        props.clear();
    }

    /**
     * 在控制台上打印出所有属性，调试时用。
     */
    public void printProperties() {
        props.list(System.out);
    }

    /**
     * 写入properties信息
     */
    public void writeProperties(String key, String value) {
        try {
//            OutputStream fos = new FileOutputStream(new File(uri));
            props.setProperty(key, value);
            // 将此 Properties 表中的属性列表（键和元素对）写入输出流
//            props.store(fos, "『comments』Update key：" + key);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        PropertiesUtil propertiesUtil = new PropertiesUtil("D:/formula.properties");
        Map<String, String> allProperty = propertiesUtil.getAllProperty();
        System.out.println(allProperty);
        allProperty.forEach((k,v) -> {
            System.out.println(k);
            System.out.println(v);
        });
    }
}
